Straining device.



STRAINING DEVICE.

APPLICATION FILED MAR. I6. 1914.

` 1,160,154. Patented Nov. 16, 1915.

nutren stares Para FFIQE.

FREDERIC R. ELLIS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO B. F.STURTEVANT COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS,

STRAINING DEVICE.

Specification of Letters Patent.

Patented Nov. 16, 1915.

Application filed March 16, 1914. Serial No. 825,059.

To all whom t may concern.' f y Be 1t known that I, FREDERIC R. ELLIS, a

citizen of the United States, residing at Hyde Park, Boston, in thecounty of Suffolk and State of Massachusetts, have invented certain newand useful Improvements in Straining Devices; and I do hereby defrom thewater drawn from the tank.

The object of the present invention is to produce a straining device ofthis kind inr which4 the strainer can be easily removed and cleaned.

wW ith this object in view, the vpresent invention consists in astraining device herein after described and particularly pointed out inthe claims.

In the drawings which illustrate the preferred embodiment of theinvention, Figure .1 is a central section through the tank and strainer,the section line vthroughthe strainer beingtaken along line'l-l of Fig.2; Fig. 2 is a rear end elevation of the strainer; Fig. 3 is a frontelevation of the plate re- -moved from the tank; Fig. 4 is a sectiontaken along the line 4--4 of Fig. 1 and Fig. 5 is a section taken alongthe line 5-54of Fig. 3.

The present invention as illustrated is enibodied in a straining deviceused with air washing apparatus. The dirtywater from the air washerflows through the inlet pipe into the sump tank 11, where the heavierparticles of dirt are separated from the water by gravity. The particlesof dirt which remain in suspension and which would be coarse enough toclog the pump or air passages of the apparatus are prevented frompassing through the outlet 12 by means of the strainer 13. The strainedwater drawn through the outlet pipe 12 is again used in the air washer.

The plate 15 is secured to the inside of the tank by means of the screws16, and closes an opening 17 cut through the side of the tank. The`central portion of the plate 15 is provided with an orifice 18 intowhich is threaded the end of the outlet pipe 12.

tending wings 29. structure of the end frame produces an open- Theinside face of the plate 15 is finishedA substantially lat. Under cutears 19 are located at the edges of the plate 15. As shown in Figs. 3and 4 the ears are located on opposite sides of the lower half of theplate 15, and theirfunder cut recesses face inwardly and upwardly.

The'strainer 13 comprises inner and outer screen drums 20 and 21 ofperforated sheet metal. rlhe front and rear ends of the screen drums aresupported by front and rear end frames and 26 respectively. The frontend frame 25 consists of inner and outer cylindrical collars 2T and 28which are integrally connected together by the radially eX- The abovedescribed ended strainerffree accessY to ythe inside of the inner screen2O being had through the circular opening through the collar 27 and freeaccess to the space between screens 2O and 21 being had through theannular space between the collars 27 and 28. The ends of the collars 27and 28 are finished to fit snugly against the fiat inner face of theplate 15 so that the plate forms a closure for the open end of thestrainer when the strainer' is in place in the tank as shown in Fig. 1.Then the strainer is in place the collars contact with the plate aroundthe outlet orifice' so that the water must pass throughvthe screen drumssupported by the collars.

The strainer is removably secured to th-e plate 15 by means of theoutwardly extending iange on the collar 2S which fits inv the under-cutlrecesses of the plate ears 19. The rear face 36 of the fiange 35 isinclined and fits against the inclined faces 37 of the under-cutrecesses of the ears 19 so as to draw the end frame 25 snugly againstthe face of the plate 15 when the strainer is slipped into place in thetank.

The end frame 26 of the strainer consists of inner and outer collars 40and 41 which support the rear ends of the screen drums 2O and 21. Theend frame 26 is provided with legs 42 which support it on the bottom ofthe tank. The construction of the end frame 26 produces a strainer whichis open at its rear as well as at its front end, access to the inside ofthe screen drum 2O being had through collar 40 and access to the spacebetween the screen drums 2O and 21 being had through the annular collars40 and 41. The open rear end of the strainer is normally closed by meansof a door 45 `which is hinged at 46 to the end frame 26 and is provided'with a latch i7 :tor holding it closed. The

inner face of the door iitssnugly against the ends of .the collars et()and eil.

TWhen the strainer is in place in the tank as shown in Fig. l, Waterpasses successively through the outer and the inner screens 2O and 2land out through'the outlet pipe 12. `When the screens become clogged,the strainer is disengaged from the plate l5 by simply lifting it ormoving it laterally so that it can easily be ieinoved from the tanlr andcleaned. The outside of the strainer may be cleaned by playing a jet ofWater upon it'aiid the inside of the strainer' .may be readily cleanedby opening the door 45 to aliord unobstructed access from end to end ofthe strainer and directing a jet of Water through it. After the straineris cleaned, it is easily replaced by lowering it into the tank With theend frame Q5 against the plate 15 so as to cause the flange 35 to engagethe under-cut ears 19.

The present invention is not limited to its illustrated embodiment butmay be einbodied in other structures Within the scope of the inventionas set forth in the following claims 1. A straining device having, incombination, a plate provided With an orifice, un-

der cut ears projecting from the plate, and

a strainer having an open. end litting against and closed by the plateandv provided with projecting portions removably received by the undercut ears so as to permit the strainer to be separated from the plate forcleaning. Y

2. A straining device having, in combination a plate having asubstantially flat inner face and provided with an oriiice through itscentral portion, under-cutears projecting from the plate, an open-endedstrainer including a screen drum and an end collar which fits againstand is closed by the plate and is provided With an outwardly extendingiiange removably received by the undercut ears so as to permit thestrainer to be separated from the plate for cleaning.

. 3. A straining device having, in combination, a plate provided with anorifice, an open-ended strainer including a screen drum Vand an endcollar Which lits against the plate around the orifice so the plateJforms a Copies of this patent may be obtained for against the face 'or'theV plate around the ori-V iice so the plateforme a closure for theopen end et the strainer, and means for removably securing the end trameto the Yplate having provision for separation orp the collar from theplate by lateral movement.

5. A straining device having, in combination, a plate having asubstantially iiat inner face provided With an. orifice through itscentral portion, ears on the edges of the plate having under cutrecesses andV a strainer including tive screen drums one inside o'f andspaced apart from the other and an end frame comprising tivo collars towhich the ends of the drums are secured, said collars fitting againstthe face of the plate so that the plate forms a closure :tor the openend or" the strainer, and an outwardly extending flange on the cutercollar removably received by the under-cut ears or the plate. so as topermit the strainer to be separated from theplate tor cleaning.'

6. fr' straining device having, in combination, a plate provided with anoriiice, a'

strainer including tivo screen drums one inside of and spacedv aparttrom. the other, a

vfront end frame having two collars upon which the front ends of thescreen drums are supported and a rear end` 'traine having two collarsupon which the rear ends of the escreen drums are supported, meansforremovably securing the front endA frame to the plate With its collarstting against:

the plate so that the plate forms a closure for the open front end ofthe strainer, and a doorsecured to the rear end frame and iittingagainst the ends oit' its collars so as to close the open rear end ofthe strainer.

' FREDERG R. ELLIS.

Witnesses i DOUGLAS BRADFORD,

L. L. SARGEANT.

ve cents'each, by addressing theV Commissioner of `Patents,

vWashington, ID. C.

